Hello,
On Fri, Oct 23, 2015 at 06:42:43AM +0900, Tetsuo Handa wrote:
> Then, isn't below change easier to backport which will also alleviate
> needlessly burning CPU cycles?
>
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -3385,6 +3385,7 @@ retry:
> ((gfp_mask & __GFP_REPEAT) && pages_reclaimed < (1 << order))) {
> /* Wait for some write requests to complete then retry */
> wait_iff_congested(ac->preferred_zone, BLK_RW_ASYNC, HZ/50);
> + schedule_timeout_uninterruptible(1);
> goto retry;
> }
Yeah, that works too. It should still be put on a dedicated wq with
MEM_RECLAIM tho.
Thanks.
--
tejun
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